-original founder of ***** (now helio's family company)
-founder of ***** (acquired by ***** ),
-co-founder of kukubox(acquired by NHN, started earlier than ***** which social network based auto addressbook updating service)
-founder of storyblender(techcrunch40 finalist) which has social network based visual path feature and trust based remaking feature.
-creator of personal resource planner (vs. ERP) which can be a great framework for understanding and predicting of personal device era (including smartphone age)
-lectured and consulted to lots of organization and corporations
(samsung, hinhan bank, SKT, , aist, aiwan government, Japanese web2. 0 conference speaker etc)